[For Elementary School Students] A Three-Choice Dinosaur Quiz to Learn Trivia and Knowledge

belly button

Dinosaurs are animals that hatch from eggs, and unlike mammals, they do not grow by receiving nutrients from a parent through a placenta. The navel is the mark left by the umbilical cord that connects mammals, including humans, to the placenta while they develop in the mother’s womb. Ears and noses also exist in dinosaurs, and these features are seen in modern birds as well, which are considered the evolved descendants of dinosaurs.

Microraptor

Some of you may have gotten it right from the word “micro.” Microraptor was a primarily tree-dwelling dinosaur, considered an ancestor of birds, and is said to have had feathers. Its sharp claws may have been for gripping trees securely. Its fossils were discovered in China.

tooth

The most important clue to understanding the diets of dinosaurs is their teeth preserved in fossils. From their shape—such as sharp teeth suited for tearing the flesh of prey or flat, broad teeth for efficiently eating leaves and other plants—we can tell whether they were carnivores or herbivores. It is also considered possible to infer the types of food they ate from distinctive wear patterns and carved-like markings.

herbivorous dinosaur

Do you know the term “survival of the fittest”? It describes a food chain in which the strong prey upon the weak. Because of this relationship, large carnivorous animals have smaller populations both on land and in the water. There are various theories, but the smallest herbivorous dinosaur is said to have been Eosinopteryx.

about 66 million years ago

It’s hard to really grasp something like “about 66 million years ago,” given that humanity has only been able to record history for roughly 2,000 years. The prevailing theory is that the dinosaurs went extinct because a massive asteroid struck what is now Mexico, and the resulting plume covered the Earth, blocking sunlight. Small mammals and insects survived and became the ancestors of later animals.